Write an article about garden design for roof terraces

Hi
I need a seo optmized article by a native English writer. The article will be about roof terraces in London and how good it is to have one, how it increases value of the property. The article must be well written and make actual sense.

Eg similar to this one
http://www.timeout.com/london/things-to-do/how-to-build-a-roof-terrace
or similar which can be found in google by keyword: roof terrace design london

We specialize in supplying and planting outdoor planters for roof terraces. So the article should be about more about garden and design aspect of the roof terraces, not building it from scratch by converting a sloping roof. Our website ( http://tinyurl.com/7rjgtec ) should naturally be mentioned. My purpose is that the article could be in top5 in google for keyword: roof terrace design london